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Finding the Fourth Proportional to 668,458.02, 922,590 and 396,675.78

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Solution

The fourth proportional to 668,458.02, 922,590 and 396,675.78 is: 547,482.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,458.02 : 922,590 = 396,675.78 : x
  2. Step 2: Convert to fraction form
    668,458.02/922,590 = 396,675.78/x
  3. Step 3: Cross multiply
    668,458.02x = 922,590 × 396,675.78
  4. Step 4: Simplify right side
    668,458.02x = 365,969,107,870.20
  5. Step 5: Solve for x
    x = 365,969,107,870.20/668,458.02
  6. Step 6: Final answer
    x = 547,482.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.